| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but it is [not/n't] | 995 |
|
| 2 | it is [not/n't] [prep] | 769 |
|
| 3 | but it is [prep] | 315 |
|
| 4 | but is [not/n't] [prep] | 15 |
|
